1

编辑这已解决：问题是即使我在编辑源文件后重建库，在再次尝试测试之前我并没有删除库，并且其中有一些旧文件。

所以我有一个像这样设置的图书馆

个人.h

#ifndef INDIVIDUAL_H
#define INDIVIDUAL_H
....
namespace dgal {
    class individual {
        public:
            individual() = delete;
            individual(const size_t numWeights);
            individual(const std::shared_ptr<dgal::individual> parentA, const std::shared_ptr<dgal::individual> parentB);
            ...
    };

}
#endif

个人.cpp

#include "individual.h"
...
dgal::individual::individual(const size_t numWeights) : weights(numWeights) {
    ...
}

dgal::individual::individual(const std::shared_ptr<dgal::individual> parentA, const std::shared_ptr<dgal::individual> parentB){
    ...
}

它被编译并放入静态库中

我构建测试的makefile就像这样

includes = -I../src/
LDLIBS = -L../build -ldgal -pthread
CXXFLAGS = -std=c++11 -Wall -Wextra $(includes)

all:
    $(CXX) $(CXXFLAGS) -o test.out main.cpp $(LDLIBS)
    @echo "Tests built"

和 main.cpp 看起来像：

...
class test : public dgal::individual {
    public:
        test() : dgal::individual(10) {std::cout << "test constructor" << std::endl;}
        test(const std::shared_ptr<dgal::individual> a, const std::shared_ptr<dgal::individual> b) : dgal::individual(a, b) {}
};

int main(){

    std::shared_ptr<test> A(new test);
    std::shared_ptr<test> B(new test);

    std::shared_ptr<test> C(new test(A,B));
    return 0;
}

但是我从 g++ 中得到一个关于我的多重定义错误，dgal::individual::individual(unsigned long)这实际上是我的size_t构造函数。但是，在我尝试使用构造函数之前它不会出现错误test(const std::shared_ptr<dgal::individual> a, const std::shared_ptr<dgal::individual> b)，我不明白多个定义的来源。

编辑确切错误：

g++ -std=c++11 -Wall -Wextra -I../src/ -o test.out main.cpp -L../build -ldgal -pthread
../build/libdgal.a(individual.o): In function `dgal::individual::individual(unsigned long)':
individual.cpp:(.text+0x0): multiple definition of `dgal::individual::individual(unsigned long)'
../build/libdgal.a(individual.o):individual.cpp:(.text+0x0): first defined here
../build/libdgal.a(individual.o): In function `dgal::individual::individual(unsigned long)':
individual.cpp:(.text+0x0): multiple definition of `dgal::individual::individual(unsigned long)'
../build/libdgal.a(individual.o):individual.cpp:(.text+0x0): first defined here

如果我将默认构造函数编辑为不被删除并尝试使用默认构造函数而不是带有参数的构造函数，那么它工作正常并且不会抱怨多个定义

4

0 回答 0